Found 1 items, similar to Heliography.
English → English (gcide) Definition: Heliography Heliography \He`li*og"ra*phy\, n. 1. [Helio- + -graphy.] The description of the sun. [Webster 1913 Suppl.] 2. The system, art, or practice of telegraphing, or signaling, with the heliograph. [Webster 1913 Suppl.] 3. An early photographic process invented by Nic['e]phore Niepce, and still used in photo-engraving. It consists essentially in exposing under a design or in a camera a polished metal plate coated with a preparation of asphalt, and subsequently treating the plate with a suitable solvent. The light renders insoluble those parts of the film which is strikes, and so a permanent image is formed, which can be etched upon the plate by the use of acid. [Webster 1913 Suppl.] 4. Photography. [Archaic.] --R. Hunt. [1913 Webster]